Rotary drill.



H. R. HUGHES. ROTARY DRILL.

CA I lLED FEB. 24. I914.

APPL 1,143,273. PatmedJune'm, 191 3 gown];

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To all whom it may concern: I v Be-itkqnewn that l", HOWARD E. 'Hvems a gi'til'zen of the United States, residing at Houston, Texas, have' invented a certain 5 nw mid useful ImprovementfigBotmy Drills, of which the following is full, clgar snd exact description such as will 511' @185 others skilled in the art' to Wliic'n it ap "eftgins to make am} use the same; I

16 his'inventionrlstesito rotal y such as are used in Well-drilling operai ibi 's;

arm-to p Water down thmugh the low stem of ths drill so as to flush (put the material that is clis'integrated by the culsers ail the bit a! asgu that is'connectecl $0 the 'lnwer end of the stem, the head or shank of 2 0 theldrill being provided with water-couyses ewrwpassagewws from which the flushing water'eszipes; :A'RUm bEI 0f Water-courses m Iformed in the head. or. shank of the v dslllfancl usually in suqh a manna? shat the 125 jaw; or streams of water which emerge there- "from come together or act on each 061s: m that the force of me 'jet or stream is partiillly neutralized by the other. The result is that the disintegfatefi material bens 5L0 3 0" pack in thellolekind adhre 'tqthe cutfiing devices on m Head or shank of the clrill,

films greatly"rducing the 'ef'lg'cie'ncy ofthe drill.- Furthermore; as due sisra'm or iet of'fiushing water" tszds tb'cmmtz'alfit the foi'ce of th s othr, mor or less baick piss su'r'is creased on the pump, thus'requirizig more power op'era'te the pump islian hw'ou'l be'necessarj if the jsts crlstrams did net come together or-adt'on' eachother 40 before the force of same hadbeedspewb,

The main object of my" present'invention therefore is to provida a drill o1" drill bit which is so designed that ih'e full force of e'acb fist orv stream of wash-Water is msilized iggdgfi it from the cutting dvies on the Another object 'td provid a drill or drill bit which is so designed that'a'jet or fifl stream 0f Wash-water will be. disdhargefi zgggcifiafiozi a: 2.5mm 2mm. i' y g m 52 5, 191i; A uowmmea e bmavj-i, 181%. s rial m. 82b$l Vick a firi'll or dfill bis which comprisfis maaxis fat discharging jets of water dawn wardlyfsomlhe lower end of the head, atazi'angle'to'a horizontal plane, into the aflvazicing paths of the cuttiil devices 011 lbs am heati. T6 this end E'have evised a, mtary drill iii which the water-courses 0r mssags' Ways are so' formecl fiat the jts p e f Wasbwatgr which emergeth W neutralize 0r soimierafil? each oiihez and, chargefidn' sunk a tends i e swiil 1 'Wsrd opposite to the dire G mi gimi ms "avatar:

I s, swam-a? (lzlil'liead irl escaping from the :mttsm 05 gill file ma; v

Myfinv snifiofi is" applicablza to or drill mils that are provided either with sh..- tisnary Gaiters 01 Wish rofiatable autism, am}

Figure 1 0f {he drawings is 521% $1912.-

-tiengl Wiew of a clrill constmcteaiin sic- While I have herein ill mrajled my illvsntig, 52

cutters; Fig. 2 is a botiom plan'vis w of? said.

chllgi ig. 3 is a vertical ssc tiqnai vi efv of said drill taken 0; apgmxnqsxely ille-films 3-3 nf Fig. l; "Fzg. 4' 1s a side elevati'onfii visw of ai'drill 'constructed iz'a mbrdance with my inventibn and pmvidsdwith sub 91* at its upper and wish, a screw threade& geltion 1 that is adapted $0.1m sufrbunfldby the usual coupling sleeve 'whish asnnects; the'head to the hallow drill steixi, i101: slibwnfidisintegrated material .lom fills basfiomioff the" hole. A pair 0f .suosmstiz fiy diskshapad cutters B are rotatably mounte 0n the drill head A in an inclined positifln, as

shown in Fig. 1, and water-courses 2 are M imaged in said head to form passa sways; fopthe fiushing water that is amps down through the drill stem. The ill shown in Figs. & t0 3 is provided with two'wm fi l rsss 0; passageways 2 mm lower egfifla Q another T obiest' a? outwardly 1n opposite directions Irom she line from the upper end of the head to the lower endface thereof, he hereeofore been the usual practice, 1 form said watercourses or passageways in such. manner that the jets or streams which emerge therefrom will be discharged downwardly end heed, thereby preventing one jet from counteracting the force of the other, and also causing the water to swirl upwardly. around the head in a circular path. in the drill-shown in Figs. 1 to 3 each of the watercourses comprises a substantially verticallydisposed portion that leads downwardly from the upper end of the heegl to a point adjacent the bottom of the head encl a substantially horizontally disposecl portion 9- that is inclined downwardly with reference to a horizontal plane, and which branches laterally from said vertically-disposed portion to the lower discharge end 3 of the water-course, as illustrated in F i 3 of the drawings. 'Whenthe drill is in operation,

the jets of water which escape from the lower ends of the water-courses will he (lischarged downwardly toward she bottom of the hole and also outwar'ily or laterally in pposite directions from Lhe drill head heward the side wall of (The hole inio the ed;-

vnncing paths of the authors, as iuicailed by thev arrows in Fig. 2, the rotary motion of the head of the drill and iLl'lQ angle at which the jets discharge from the head causing the Water to swirl upwardly in a circu lilf'pflti l opposite to the direction of rotation of the drill head. By forming the water courses insuch a manner that ihe'jets of water are dischargecl from the boctorn end face 4 of the head in opposite clil; ciions end at points between the cutters B, ihefull force of each jet .is exerierl on the (llsiilijfi' grated material, and consequently seicl moteriel Will not pack in ihehole or cling to v the cutters.

The drill illustrated in. Figs. 4 ericl .5 is provided with approximately Taste-conicalshaped. cutters 13' that are rotatably mounted on the head A of the drill in such a manner that vtheir axes of rotation. incline {lo uwarrlly and. inwardly toward she longitudinal center of thedrill head and the watercourses or passageways Q-O'thoiJ formed in the head lead downwardly from the upper ciir'i of the head to discharge oi'ieoin'gs 30 formed in the lower end face oil-the head at points above the cutters 73- tiiirl between said cutters. The water-courses 9 are inclined in such a manner thab the je i which escape from the lower ends of some will be discharged downwardly into the eclraiiciug' paths of the cutters and ouimirclly in opiposits directions lowest? the siiie the hole, as indicated by the arrows 111 2g. is, the

jets being discharged from he need 'ten- I gezrhielly in circular paths opposite in the, direction of rotation of the drill; head. While the water-courses 2G the drill shown im Figs, i and 5 are formed in a l shghily different; manner from the water-courses oi? the drill shown in Figs. 1 to 3, nevertheless, the some reshlts. are accomplished, namely, the full force of each jet is utilized; to stir up disintegreftecl materielemi prevent it from packing, no hack pressurels created on the pump, and the weterswirls upwardly in a circular path in escaping from she hot tom of the hole.

While I have herein illustrated two lifierexit of rotary drills, each of which is provided with two watercourses or passageways for the flushing water 1 wishij: to be understood that inversion. is applicable tovarious oeher types of rotary drills, and that the particular numherof watercourses or passageways in the head of thedrill are immeteriei so for as mybros-li iclee is concsrneci.

Having time iiescribed my invention, whet- 1 claim as newfen. desire to secure by Lei? iii'S Peltent is: l.

rotary boringdriil having e head or provided with e weteecourse or-pasey which is'so ciisposecl shat she stream we wrwhich emerges thereirom will-be projectccloutwardly from the head and also downwardly at such a. slight angle that it strikes the bottom of the hole-ii; tends to swirl upwardly around the'heed in circuler'peth opposite to the direciion in which the head of the drill is rotating. I A rotary boring drill having a, hea or provided with e water-course or peswhich is so formed shat a jet-of I r will be discharged from face of she head toward the side well of" the hole and downwardly against meseriel on the bottom of the hole at suche slight ion in a horizontal plane that it r (l upwardly around the drill ii iii in. circular sees oojoosibe'xfio the diio'ceom of the hole, the lower portion of ssui passage being inclined 'at such e slight g, l oowiiu'arrily against the material on she ehe'lower enzi angl to a horizontal plane that the water and clisinlegreted materiel wiil be Eischergeri upwardly around the-heed of the rlrillin oi rculer path opposite so the-dime tion of rotation of the head. I i

A rotary boring drill prox iile with. s

onto vthe material lying in advance of the path of the cutting device and at such an angle that the disintegrated material is flushed laterally toward the 'side of the hole.

A rotary boring drill comprising a head provided with a cutting device, and a watercourse or passageway formed in said head in such a manner-that a stream or jet of water will be projected downwardly and outwardly from said head in a circular path opposite to the direction of rotation of the drill head and toward the advancing edge of the cutter.

6. A rotary boring drill equipped with a rotatable cutter and provided with means for projecting a stream of water downwardly toward the bottom of. the hole and outwardly toward the side of the hole in a circular path opposite to the direction of rotation of the drill.

7. A rotary boring drill comprising a head, and a rotatable cutter on said head, said head having a water course or passage- "way the lower end of which is inclined at a slight angle to a horizontal plane so that a jet of water will be discharged toward the advancing edge of the cutter and downwardly against the disintegrated material at the bottom of the hole at such an angle that said water and material will be carried upwardly around the drill head in a circular path opposite to the direction in which the head of thedrill is rotating.

8. A rotary boring drili comprising a head or shank provided with a cutting device, and means for causing a jet of water to be discharged downwardly and tangentially from the lower end of the head.

9. A rotary boring drill comprising ahead or shank provided with a cutting device, and

means for causing a jet of water to be discharged downwardly and tangentially from the lower end of the head and-in a circular path opposite to the direction of rotation of the head.

10. A- rotary boring drill comprising ahead provided with a cutting means, and means :for causing a plurality of jets of water to be iii discharged downwardly from the head and Q0 outwardly from the head toward the side Wall of the hole in paths that do not meet or intersect, thereby preventing the force of. jet from being neutralized by a different 11. A .rotary boring drill comprising a head provided with a cutting means, and a plurality of water-courses formed said head in such a manner that streams of water are discharged downwardly and outwardly from the head in a circular path opposite to the direction of rotation of the drill head and in such a mannr that the full force of each jet is utilized to stir up the disintegrated material and prevent it from adhering to the cutting means on the head.

12. A rotary boring drill provided with a plurality of cutting devices and with passages for causing jets of water to be discharged toward the advancing edges of said cutting devices and also downwardly against the material on the bottom of the hole, the lower portion of said passagesbeing inclined at such a slight angle to a horizontal plane that said water and disintegrated material will be deflected upwardly around the drill head. i p

13. A rotary boring drill provided with a plurality of rotatable cutters and with means for causing a plurality of streams of water to be discharged downwardly toward the bottom of the hole and outwardly toward the side of the hole in circular paths omiosite to the direction of rotation of the drill head.

14. "A rotary boring drill comprising a head or shank provided with water-courses or passageways which are so formed that a plurality of jets of water will be discharged downwardly and tangentially from the lower end face of the head in such a manner that the force of one jet is not neutralized .the head in such a manner that the streams of water which emerge therefrom are projected downwardly from the head toward the bottom of the hole and also laterally toward the side of the hole.

In testimony whereof I hereunto affix my signature in the presence of two witnesses,

this 16 day of February 1914.

- HOWARD R. HUGHES. lVitnesses: r L; A. GonBoLn, C. T. Rnnn. 

